1540 K
44 pp.
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TitleThe Path of Carbon in Photosynthesis XXI. The Cyclic Regeneration of Carbon Dioxide Acceptor
Author(s)Bassham, J. A.; Benson, A. A.; Kay, Lorel D.; Harris, Anne Z.; Wilson, A. T.; Calvin, M.
Publication DateOctober 01, 1953
Report NumberUCRL--2369
Unique IdentifierACC0324
Other NumbersOSTI ID: 4414160; OSTI ID: 915417
Research OrgUniversity of California Radiation Laboratory, Berkeley, CA; Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US) [LBL][LBNL]
Contract NoW-7405-ENG-48; DE-AC02-05CH11231
Sponsoring OrgU.S. Atomic Energy Commission (AEC)
Subject14 Solar Energy; Carbon Cycle; Carbon Dioxide Fixation; Esters; Hexoses; Phosphates; Photosynthesis; Ribulose; Saccharides; Plants; Carbon 14; Chemical Reaction Kinetics
KeywordsBiology And Medicine; Adenosine; ADP; ATP; Biochemistry; Carbon; Carbon Dioxide; Chromatography; Enzymes; Esters; Folic Acid; Hexose; Metabolism; Organic Phosphorus Compounds; Plants; Radioautography; Reduction; Ribonucleic Acid; Ribulose; Sedoheptulose; Sugars; Tracer Techniques; Vitamin B Group; Vitamins; Carbohydrates; Catalysis; Chemical Reactions; Energy; Light; Mathematics; Molecules; Organic Compounds; Photolysis; Quantity Ratio; Reduction; Ribonucleic; Respiratory Cycles; Photosynthetic Products; Plant Respiration
Related Web PagesMelvin Calvin and Carbon in Photosynthesis
AbstractPhotosynthesizing plants have been exposed to C{sup 14}O{sub 2} for short periods of time (0.4 to 15 sec.) and the products of carbon dioxide reduction analyzed by paper chromatography and radio autography. Methods have been developed for the degradation of ribulose and sedoheptulose. These sugars, obtained as their phosphate esters from the above C{sup 14}O{sub 2} exposures and from other experiments, have been degraded and their distribution of radiocarbon determined. The distribution of radiocarbon in these sugars, and other data, indicate that sedoheptulose phosphate and ribulose diphosphates are formed during photosynthesis from triose and hexose phosphates, the latter being synthesized, in turn, by the reduction of 3-phosphoglyceric acid.
1540 K
44 pp.
View Document 

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